Domane SL 8 Disc | Trek Bikes
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SALE 2018

Domane SL 8 Disc

$4,999.99 $5,499.99 Model 21465

Domane SL 8 Disc is a lightweight, high-performance, endurance road bike with a top-of-the-line parts group. A carbon frame, Front and Rear IsoSpeed, a full Dura-Ace drivetrain, and Bontrager carbon wheels come together for a ride that's fast, efficient, and fully capable of taking on races, all-day adventures, and rough roads.

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It's right for you if...

You're an experienced roadie who doesn't settle for anything less than a top-of-the-line drivetrain. You're used to long days in the saddle, but now you want to be even faster and more efficient, and you're ready to make the jump to a road bike with carbon wheels and hydraulic disc brakes for better control on rough roads.

The tech you get

A 500 Series OCLV Carbon frame with Front and Rear IsoSpeed, Bontrager Aeolus Pro Disc carbon wheels, powerful flat mount hydraulic disc brakes, wide 700x32 tires, and a full 2x11 Shimano Dura-Ace groupset. Domane SL 8 Disc also has internal cable routing for clean looks, a carbon seatmast, and a stable Endurance Geometry for comfort on the longest days and roughest roads.

The final word

Better shifting means better performance. Domane SL 8 Disc has the highest-end mechanical drivetrain available, plus Bontrager Aeolus Pro Disc carbon wheels, Front and Rear IsoSpeed, and a lightweight carbon frame.

favorite_borderWhy you'll love it

  1. This bike is super versatile, and it can take you to places you never thought possible on a road bike
  2.  It comes stock with Aeolus Pro Disc carbon wheels, which are a major upgrade in weight and performance over aluminum wheels
  3. Shimano's top-of-the-line mechanical drivetrain is smooth, fast, light, and reliable
  4. It's super smooth on rough roads—fast shifting and IsoSpeed make it an ideal choice for fast, adventurous riders

More options



  • Frameset

    500 Series OCLV Carbon, Front & Rear IsoSpeed, E2 tapered head tube, BB90, flat mount disc brakes, Power Transfer Construction, hidden fender mounts, internal cable routing, 3S chain keeper, DuoTrap S compatible, Ride Tuned seatmast
    Domane carbon disc, carbon E2 steerer, flat mount disc brakes, 12mm thru axle
  • Wheels

    Bontrager Aeolus Pro 3 Tubeless Ready Disc, 12mm thru axle
    Bontrager R2 Hard-Case Lite, 700x32c
  • Drivetrain

    Shimano Dura-Ace, 11 speed
    Front derailleur
    Shimano Dura-Ace, braze-on
    Rear derailleur
    Shimano Dura-Ace
    Shimano Dura-Ace, 50/34 (compact)
    Bottom bracket
    Shimano Dura-Ace, 11-30, 11 speed
    Shimano Dura-Ace
    Not included
  • Components

    Bontrager Affinity Comp, chromoly rails
    Bontrager Ride Tuned carbon seatmast cap, 20mm offset
    Bontrager RL IsoZone VR-CF, 31.8mm
    Bontrager tape
    Bontrager Pro, 31.8mm, 7 degree, w/computer & light mounts
    Integrated, cartridge bearing, sealed, 1-1/8˝ top, 1.5˝ bottom
    Shimano Dura-Ace flat mount hydraulic disc
  • Weight

    56 cm - 7.70 kg / 16.98 lbs
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 275 pounds (125 kg).
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based off Trek pre-production painted frames at time of publication. Weights may vary in final production.

Sizing & fit

The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.


Rider Height


All measurements provided in cm unless otherwise noted.

Frame size number A — Seat tube B — Seat tube angle C — Head tube length D — Head angle E — Effective top tube G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack Saddle rail height minimum Saddle rail height maximum
50 cm 45.0 74.6° 13.0 71.1° 51.9 8.0 42.0 5.3 6.0 99.6 71.6 36.8 54.6 58.5 68.0

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